Water seal gate valve
Featuring a pressure-assisted water sealing structure, the Water Seal Gate Valve effectively prevents external leakage under high-temperature and high-pressure conditions. Manufactured from premium cast steel or alloy steel materials, it offers excellent sealing performance, corrosion resistance, operational safety, and long service life in demanding steam and power generation applications.
Water seal gate valve
The Water Seal Gate Valve is specifically engineered for thermal power plants, steam pipelines, boiler systems, and condensate recovery systems. Utilizing a water-sealed bonnet design, the valve creates an additional sealing barrier through pressure water injection, preventing medium leakage and improving operational safety.
This valve is particularly suitable for high-temperature and high-pressure steam applications where conventional packing seals may experience leakage risks. Its robust construction and advanced sealing design ensure reliable shut-off performance and long-term durability.
Our Water Seal Gate Valves are manufactured under strict quality control systems and can be supplied with complete international certifications:
Water seal gate valve
| Parameter | Specification |
|---|---|
| Product Name | Water Seal Gate Valve |
| Valve Type | Water Seal Wedge Gate Valve |
| Design Standard | API 600 / ASME B16.34 |
| Testing Standard | API 598 / EN 12266 |
| Size Range | DN50–DN1200 (2"–48") |
| Pressure Rating | PN16–PN420 / Class 150–2500 |
| Body Material | WCB, WC6, WC9, CF8, CF8M, Alloy Steel |
| Bonnet Type | Water Seal Bonnet |
| Gate Type | Flexible Wedge / Solid Wedge |
| Connection Type | Flanged / Butt Weld |
| Operation | Manual, Gear, Electric, Pneumatic |
| Working Temperature | -29°C to 600°C |
| Applicable Media | Steam, Condensate Water, Thermal Oil |
| Leakage Class | API 598 |
| Certification | API, ISO, CE, PED |
Water seal gate valve
Widely used in main steam pipelines, reheating systems, and auxiliary steam networks.
Provides reliable shut-off and leakage prevention in high-pressure boiler installations.
Ideal for steam transportation systems requiring superior sealing performance.
Used in condensate collection and return pipelines to improve operational efficiency.
Suitable for high-temperature steam and process utility applications.
Applied in district heating and industrial thermal energy distribution systems.
Ensures safe isolation and dependable operation in critical energy infrastructure projects.
Material customization plan
Customized 316L stainless steel valves forGerman chemical enterprises. Resistant tostrong corrosion, suitable for their acidicmedium transportation systems, with aservice life extended to over 8 years.
Structural optimization design
For the Saudi desert project, the valve stemsealing structure was changed to a doublebellows design to address the leakage issuein the high-temperature and dustyenvironment, and it was highly recognizedby the customers.
Interface standard adaptation
Customized API 600 standard valves for acertain company in the United States. Theflange size is fully compatible with ANSIB16.5, ensuring zero error during on-siteinstallation and reducing the constructionperiod by 30%.
